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005 20231030041748.0
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090 _a661476
100 _a20191226a2019 k y0engy50 ba
101 0 _aeng
105 _ay z 100zy
135 _adrgn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aTowards a Theory of Flow Stress in Multimodal Polycrystalline Aggregates. Effects of Dispersion Hardening
_fD. Cevizovic, A. A. Reshetnyak, Yu. P. Sharkeev
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 7 tit.]
330 _aWe elaborate the recently introduced theory of flow stress, including yield strength, in polycrystalline materials under quasi-static plastic deformations, thereby extending the case of single-mode aggregates to multimodal ones in the framework of a two-phase model which is characterized by the presence of crystalline and grain-boundary phases. Both analytic and graphic forms of the generalized Hall–Petch relations are obtained for multimodal samples with BCC ([alpha]-phase Fe), FCC (Cu, Al, Ni) and HCP ([alpha]-Ti, Zr) crystalline lattices at T=300K with different values of the grain-boundary (second) phase. The case of dispersion hardening due to a natural incorporation into the model of a third phase including additional particles of doping materials is considered. The maximum of yield strength and the respective extremal grain size of samples are shifted by changing both the input from different grain modes and the values at the second and third phases. We study the influence of multimodality and dispersion hardening on the temperature-dimensional effect for yield strength within the range of 100–350K.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 0 _0(RuTPU)RU\TPU\network\4816
_tAIP Conference Proceedings
463 0 _0(RuTPU)RU\TPU\network\31884
_tVol. 2167 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 (AMHS'19)
_oProceedings of the International Conference, 1–5 October 2019, Tomsk, Russia
_fNational Research Tomsk Polytechnic University (TPU) ; Institute of Strength Physics and Materials Science SB RAS (Russia) ; eds. V. E. Panin ; S. G. Psakhie ; V. M. Fomin
_v[020047, 7 p.]
_d2019
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aтеория напряжений
610 1 _aполикристаллические агрегаты
610 1 _aпластические деформации
610 1 _aупрочнение
610 1 _aтекучесть
610 1 _aкомпозитные материалы
610 1 _aсплавы
700 1 _aCevizovic
_bD.
701 1 _aReshetnyak
_bA. A.
701 1 _aSharkeev
_bYu. P.
_cphysicist
_cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences
_f1950-
_gYury Petrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\32228
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа физики высокоэнергетических процессов
_c(2017- )
_h8118
_2stltpush
_3(RuTPU)RU\TPU\col\23551
801 2 _aRU
_b63413507
_c20191226
_gRCR
856 4 _uhttps://doi.org/10.1063/1.5131914
942 _cCF